Consider two connected rigid vessels separated by a valve. The first rigid vessel has a volume of $0\mathrm{.}400m^3$ and contains $H_2$ at $14\mathrm{.}5C$ and a

pressure of $600.{10}^{3}Pa.$ The second rigid vessel has a volume of $0\mathrm{.}530m^3$ and contains Ar at $24\mathrm{.}5C$ at a pressure of $100.{10}^{3}Pa.$The

valve separating the two vessels is opened, and both are cooled to a temperature of $13\mathrm{.}0C.$

Part A

What is the final pressure in the vessels?

Express your answer with the appropriate units.